505851300169 has 2 divisors, whose sum is σ = 505851300170. Its totient is φ = 505851300168.

The previous prime is 505851300167. The next prime is 505851300221. The reversal of 505851300169 is 961003158505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504490575625 + 1360724544 = 710275^2 + 36888^2 .

It is a cyclic number.

It is not a de Polignac number, because 505851300169 - 2¹ = 505851300167 is a prime.

It is a super-2 number, since 2×505851300169² (a number of 24 digits) contains 22 as substring.

Together with 505851300167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (505851300167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252925650084 + 252925650085.

It is an arithmetic number, because the mean of its divisors is an integer number (252925650085).

Almost surely, 2^505851300169 is an apocalyptic number.

It is an amenable number.

505851300169 is a deficient number, since it is larger than the sum of its proper divisors (1).

505851300169 is an equidigital number, since it uses as much as digits as its factorization.

505851300169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 505851300169 in words is "five hundred five billion, eight hundred fifty-one million, three hundred thousand, one hundred sixty-nine".